Using terahertz time-domain spectroscopy, we have measured the temperature dependence of the far-infrared vibrational modes of a number of illegal drugs and high explosives that are of interest to the forensic and security services. Well-resolved low-frequency absorption peaks were observed in the frequency range 0.3 - 3.0 THz and over the temperature range 4 - 296K, some of which were found to become more intense and shift to higher frequencies as the temperature was reduced. Our results confirm that the low-frequency collective modes are highly sensitive to the structural and spatial arrangement of molecules.


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    Titel :

    Temperature-Dependent Far-Infrared Spectra of Explosives and Drugs Measured by Terahertz Time-Domain Spectroscopy


    Beteiligte:
    Fan, W. H. (Autor:in) / Burnett, A. (Autor:in) / Upadhya, P. C. (Autor:in) / Cunningham, J. (Autor:in) / Linfield, E. H. (Autor:in) / Davies, A. G. (Autor:in)


    Erscheinungsdatum :

    01.09.2006


    Format / Umfang :

    1256070 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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